DOI: 10.1016/S0083-6729(08)61068-7
关键词:
摘要: Publisher Summary This chapter discusses the characteristics of epidermal growth factor—urogastrone, a polypeptide acquiring hormonal status. The discovery, isolation, and complete sequence determination two related polypeptides, one from mouse other man, that are both highly potent stimulators cellular proliferation inhibitors gastric acid secretion is described. structure human urogastrone determined by Cohen who isolated polypeptides urine concentrates, which observed to interact with same membrane receptor demonstrated be an active mitogen in vivo vitro . physicochemical data obtained colleagues suggest as urogastrones. Human provides richest convenient source factor-urogastrone (hEGF-URO). By radioreceptor assay, it can estimated random samples male donors contain, on average, about 9.5 nmol/liter. isolation requires initial preparation either tannic acid-acetone or benzoic powder urinary proteins, followed multiple gel filtration ion exchange steps.